Elevator



' 2 sheets-sheet 2. P. F.= GORBETT. l l

Patented Ja,11. 6, 1885.

BLBVATOR.

(No Model.)

NITED i STATES ATENT OFFICE.

` ELEvAToR.

SPECIFICATION forming part of Letters Patent No. 310,183, dated January 6, 1885.

` Application iiledJ une 9, 1884. (No model.)

To coZZ whom it may concern:

Beit known that I, PHILIP F. CORBETT, of Boston, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Elevators,of which the following is adescription sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specication, in which- Figure l is a side elevation of my improved elevator, the gate being represented as closed and the carriage at the bottom of the well. Fig. 2 is an isometrical perspective view showing the gate partially elevated, the frame-work of the top of the carriage being represented as broken away. Fig. 3 is a top plan view of the carriage; Fig. 4, an isometrical perspective view showing the ways in which the gate runs, the gate being represented as closed and its counter-balance elevated. Fig. 5 is a bottom plan view ofl one of the bolts; Fig. 6, a perspective view showing the trip lever or catch and the counter-balance; and Fig. 7, a perspective view of a portion of the framework of the top of the carriage, showing the arrangement of the levers used for operating the bolts.

Likeletters of reference indicate corresponding parts in the different figures of the drawings.

My invention relates to that class of elevators in which the gates are opened and closed automatically; and it consists in a novel construction and arrangement of the parts, as hereinafter more fully set forth and claimed, by which a more desirable and effective device of this character is produced than is now in ordinary use.

The nature and operation of the improvement will be readily understood by al1 conversant with such matters from the following explanation In the drawings, A B represent the front side posts or gateways of the well; C, the gate; D, the cord on which the gate is suspended; E, the counterbalance for'the gate; L, the door, and K the floor. The gate is fitted to slide vertically in the grooves m, and the counter-balance in a groove, d, formed in the inner face of one of the side posts, the cord passing over the sheaves or trucks f, disposed in a suitable position beneath the next floor above K. The inner face of the counter-balance is provided with a hinge catch or lever, g, adapted to be turned up into a nearly vertical position, but which is kept from falling below a horizontal position, as represented in Fig. 6, by the bracket i. The weight of the counter-bah ance is slightly less than that 'of the gate, and it is provided with a chamber or aperture,H,

for receiving additionalweights, as may be required.

On the inner face of the post B, at the left of the groove d, and near the top of the door or opening L, there is a cam, M, and near the bottom of the door, at the right of the groove d, there is a corresponding cam, N, the latter being nearly opposite the top of the gate when it is closed. A cam, O, is also disposed on the inner face of the post A,opposite the cam M, and on the innerface of the gate, near its bottom, there are two catches, hhZ-one at either sideas best seen in Fig. 4. A carriage, P, is fitted to slide vertically in the well of the elevator, being suspended on the cords r, passing over the wheel T, and operated in` any suitable manner. The top of this carriage is preferably framed as shown in Fig. 3, 1n which Z Z are beams crossing at the center,

and t c beams or bars arranged in parellelism, l

and bolted tothe top of the beams l, their outer ends coming nearly into contact with the inner faces of the posts A B.

Secured to the outer end of the beam ru there are two spring-bolts, w x, the bolt wbeing adapted to engage the catch h2 on the gate, and also the cam Mon the postB, and the bolt x, to engage the cam N on said post, and also the-hinged lever g on the counter-balance E. A spring-bolt, y, is attached to the outer end of the beam t, and adapted to engage the catch h on the gate C, and also the cam O on `the Vpost A. The catches h h2 are inclined from top to bottom on their inner sides or faces, and are cut off or terminate abruptly at their lower ends, as shown at b.

In the use of my improvement, the carriage being at the bottom of the well below the floor K, as seen in Fig. 1, if now power is applied to cause the carriage to ascend, when it has risen far enough to bring the outer ends of the bolts y w into contact with the lower ends,

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b, of the catches h h2 on theI gate C, the gate will be carried upwardly with the carriage, and the bolt will pass over the cam N. The carriage continuing to rise with the gate snspended on the bolts y w, the counter-balance descends and passes the bolt x, the hinged lever g being turned up by said bolt as it passes the same, and dropping again into a horizontal position as soon as the bolt is above it. The carriage still continuing on its upward course, the bolts y 'w are next brought into contact with the cams O M and forced out of engagement with the catches h h2, permitting the gate to drop, and thereby causing the counterbalance to ascend in the groove d until the hinged lever g comes into contact with the bolt fr, the carriage keeping on its course upward and the gate downward until the gate strikes the floor K and closes the door L, the counter-balance of course stopping simultaneously with the closing ofthe gate. The carriage then passes upwardly and operates in like manner a series of corresponding gates (not shown) on the doors above, and in due time returns to pass the door L on its downward course to the bottom of the well. Vhen the carriage has passed downwardly far enough to bring the bolt x into contact with the lever g, as the bolt cannot pass said lever the counter-balance to which the lever is hinged will be forced to descend with the carriage, and t-he gate will be raised. In the meantime the bolt y will pass the cam O, and as the gate ascends thebolts y w will be brought into contact with the inclined sides of the catches h h2 and pass said catches. The carriage still continuing to descend, and being about to pass below the floor K, the bolt x is next brought into Contact with the cam N and forced out of engagement with the lever g, thereby permitting the gate to drop and the catches h hL to engage the bolts y w, the top of the carriage being` partially above the floor when the gate drops. After the gate has dropped, as described, it hangs suspended on the bolts 1/ w until the carriage passes downwardly far enough to permit it to rest on the floor K. vIf for any reason the carriage should not descend into its well far enough after the gate drops to permit it to rest on the ioor K, it will be carried upwardly again when the carriage ascends, and again dropped, as before described. The gate is always closed when the carriage is below the door K, and does not commence rising or opening until the carriage begins to pass the door L on its upward course. The cord D is of such a length and the cams O M so arranged that when the carriage is ascending the gate always drops when the floor of the carriage arrives on a plane with or slightly above the floor K, but does not drop low enough to prevent the free egress of the passengers. The gate also always reaches the iloor and closes the door before the carriage has passed the door in its upward course.

All of the parts are so constructed and timed as to cause the gate to drop onto the bolts y w before the carriage has passed the door as it descends, so that by the time the top of the carriage has reached the plane of the floor the gate will be closed. When it is desired to have the carriage ascend or descend without operating the gate, the bolts y w a: are drawn back by means of the cords j, bellcrank levers n., and pull q. The levers are pivoted to the beams Z and connected by links e to the pull q, which extends downwardly into the carriage in a convenient position for use. A spring-buffer, Q, is placed at the bottom of the groove d to break the fall of the counter-balance, or stop it gradually as the gate reaches its highest position.

The bolts y w mare of the ordinary construction, except th at their outer ends, u, are rounded on both the upper and lower sides to enable them to pass the cams O M N readily. The bolts y fw are also of suicient width, and so arranged on the bars t fu as to respectively engage the catches h h2. and cams O M as the carriage rises and falls. The kbolt a: is also so constructed and arranged as to engage both the cam N and lever g.

Having thus explained my invention, what I claim isl. In an elevator, the combination of the following instrumentalities, to wit: a well, a door opening into the well, a carriage, a gate adapted to close the door, a counter-balance for the gate, a cord connecting the gate and counterbalance, and a cam or cams disposed on the interior of the well, the carriage being adapted to engage the gate as it ascends and carry it upwardly until disengaged therefrom and dropped by the cam or cams, and the counter-balance adapted to engage the rising carriage when the gate drops and remain in engagement therewith until the gate closes, said counter-balance being also adapted to engage the carriage as the carriage descends, and remain in engagement therewith until disengaged therefrom by the cam or cains,thereby releasing the gate and permitting it to drop, and the carriage adapted to engage the falling gate and cause it'to descend in unison with the carriage until it reaches the floor and closes the door, substantially as described.

2. In an elevator, the combination ofthe carriage l?, a counter-balance adapted to engage said carriage, the gate C, cord D, cams O M N, catches h h2, bolts y w x, and operative mechanism, substantially as set forth.

3. In an elevator, the counter-balance E,pro vided with the hinged lever g, in combination with the carriage P, bolt zr, cam N, gate C,cord D, and operative mechanism, substantially as described.

4. In an elevator, the levers a, pull q, links z, and cords j. in combination with the bolts y w x, and carriage P, substantially as set forth.

5. In an elevator, the gate C, provided with the catches la h2, in combination with the cord D, counter-balance E, and carriage P, having the bolts y w, substantially as described.

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6. In an elevator, a counter-balance and ear riage adapted to pass each other freely as the carriage aseends, and to engage each other as the carriage descends, in combination with a with the carriage P, catch h2, and cam O, said bolt being,` adapted to engage said catch and cam, substantially as set forth.

9. In an elevator, the bolt w, in combination with the catch h2 and @am M, said boltrbeing adapted to engage said catch and earn, substantially as described.

l0. In an elevator, the bolt x, in eombina- A tion with the cam N and lever g, said, bolt being adapted to engage said earn and catch, substantially as set forth.

PHILIP F. CORBET'I.

Witnesses:

C. A. SHAW, L. J. WHITE. 

